Ice-making apparatus.



PATENTED MAR. 19, 1907.y

B.' P. DALY. IGP. MAKING APPARATUS.

APPLICATION FILED ILIAS. 1906.

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vIINI'IED STATES PAENT 'UEE-ien BENJAMIN E. DALY, oE NEW YORK, N. Y.

ICE-MAKING To all, wil/om, t may concern:

Be it known that I, BENJAMIN F. DALY, acitizen of the United States, residing in New York, in the countyof New York and State of New York, have invented certain new and useful Improvements in Ice-Making Apparatus, of which the following is a specification.

My invention relates to improvements in ice-making apparatus, and particularly to ap- 1o paratus for making blocks of convenient size by what is known as the plate method.

' My invention consists in the novel features hereinafter described, and particularly point" ed out in the claims.

1 5 The superiority of plate-ice to can-ice is well recognized; but as heretofore practiced the making of plate-ice has had the serious disadvantage that the ice must be handled in very large sheets, requiring expensive zo machinery to handle the same and involving considerable ex ense and Waste inthe cut-- ting up of the p ates or sheets into blocks of salable size.

, The objects of my invention are to over- 2 5 come this objection and to provide means whereby a single freezing-plate may form any desired number of ice blocks of convenj ient size, such blocks being separate from each other, to provide convenient means for 3o freeing such blocks from the plate, to make the blocks uniform in size, and to provide convenient means for regulating the freezing of the blocks.

. I will now roceed to describe my invention 'with re erenee to the accompanying drawings, in which one embodiment of my 'invention is illustrated, and will then point out the novel features in claims.

In the said drawings, Figure 1 shows a top 4o view of a freezing-plate in place within a tank, all but one of the arms of said tank being shown in section. Fig. 2 shows a side view and partial section of said plate in place within the tank, a portion of one of the ice cakes being broken away to show the side of the plate and a portion of the side of the plate being broken away to show the interior coils, one of the arms of said plate being also sectio'ned. Fig. 3 shows a transverse section 5o through one of the arms of the plate.

In the said drawings, 1 designates the freezing-tank, 2 the freezing-plate, and 3 lateral arms or projections therefrom for separating the ice as it forms into blocks. The

said freezing-plate in the construction shown comprises two pipe-coils 4 and 5, respec- Speccation of Letters Patent. Application nea January 23,1906. 'Serin No. 297,408.

APPARATUS.

Patented March 19,` 1907.

tively, the former arranged in vertical return-bends, these coils being inclosed within metallic sheathing-plates 6. The arms 3 comprise vertical return-bend coils 7, which 6o in the construction shown are connected only to coil 5, said coils 7 inclosed by sheathings of non-conducting material S-such as wood, for example.

In the normal operation of my device during the freezing of the ice cold brine or other suitable refrigerating agent is circulated through the coils 4:. The tank 1 being filled with water, this causes ice to form against the sides of the freezing-plate 2 and between 'fo the arms 3, said arms therefore. dividing up the ice as it forms into a series of separate blocks of convenient size. The blocks having been formed, I stop "the flow of cooling 'fluid through coils 4. and circulate warm 75 fore throug the coils 7 of the arms 3, thereby melting those surfaces of the ice-cakes which are in contact with the surfaces of the 8o freezing-plate suiiiciently to free said. icecakes from the plate and permit them to be removed. The flow of the heating agent through the coils 5 and 7 is then stopped, the tank 1 is again filled, and the operation 8 5 repeated. The function of the nonconducting material 8, which sheaths the coils 7 of arms 3, is this, but for said non-conducting material the ice would form more rapidly close to the arms 3 than elsewhere, and the 9o cakes formed would nnt be-regular and substantially rectangular in sha e, but would be concave. I'obviate this di 'culty by so proportioning the thickness of non-conducting material on the arms 3 as substantially to 95 neutralize this tendency to uneven freezing, and thereby I am enabled to obtain substantially rectangular blocks. Preferably, also, I provide valves 9 for connecting pipe-coils cooling fluid to coils 7 to accelerate the formation of ice along arms 3. By admitting such cooling iluid to coils 7 to accelerate the formation of. ice or, if necessary, by admitting the freezing I may regulate as desired the formation of ice between the arms 3, thus insuring the formation of regular blocks.

As shown, the sheathing-plates 6 are annate just inside the webs of these plates, leaving a space for the anges of the pipe-l water or warm brine or steam or other s it: all'eleam fluid through coils 5, and there- 4 and 5, so that when desired I may admit Ico heating fluid to coils 7 momentarily during 105 gle-plates, and the sheathing-pieces 8 termi- ITO joints by which the sections of pipes 4 and 5 are connected together and the coils 7 are connected to pipe 5.

10 designates melting-coils within the bottom of the tank, provided to free the ice from the tank-bottom.

What I claim is- 1. In ice-making apparatus, a freezingplate of heat-conductive material and rovided with 991mg means, and dividingarms of material conducting heat with diiiiculty projecting therefrom at intervals.

2. In ice-making apparatus, a chambered freezing-plate provided with heat-conducting Walls, and dividing-arms of material conducting heat with diiculty projecting outwardly from sides of the plate provided with such heat-conducting walls.

3. In ice-making apparatus, a freezingplate comprising a chamber having Within it pipe-coils and means for circulating cooling andheating luids therethrough, said plate having dividing-arms projecting from its sides and comprising pipe-coils and sheathings of non-conducting material.

4. In ice-making apparatus, a freezingplate comprising a chamber having within it pipe-coils and means for transmitting cooling fluid therethrough, said plate having dividing-arms projecting from its sides and comprising pipe-coils, means for transmitting either cooling or heating iuid through said latter coils at will and sheathings of non-conducting material for the coils of said arms.

5. In ice-making apparatus, a freezing- 3 5 plate comprising a chamber having within it two ipe-coils and means for supplying heating uidtgkone and cooling iiuid to the other, said p ate having dividiigarms projecting from its sides and comprising pipe-coils con- 4o nected to one of the coils of said plate, and means for connecting the said coils of said plate, whereby either cooling or heating Huid majT be passed through the coils oi said arms at will.

6. In ice-making apparatus, a freezingplate comprising main pipe-coils, plates forming the sides of said freezing-plate having flanges or webs, dividing-arms projecting from the sides of said plate and comprising 5o pipe-coils and sheathing-pieces fitting between the flanges of said side plates, but leaving a space between said langes, the main pi e-coils being formed in sections connected v joints located in said spaces, and 55 the coils of said arms connected to main pipe-coils by joints located within said spaces.

In testimony whereof-I aiiix my signature inthe presence of two witnesses.

BENJAMIN F. DALY.

Witnesses:

ROGER H. LYON, H. M. MARBLE. 

